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In a first order reaction, 80 % of the r...

In a first order reaction, 80 % of the reactant at an instant was reduced to 8 % in 4606 seconds. The rate constant of the reaction is

A

`2.303xx10^-4 s^-1`

B

`4.606xx10^-3 s^-1`

C

`5.000xx10^-3 s^-1`

D

`5.000xx10^-4 s^-1`

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